[Distutils] virtualenv patch

[Tres Seaver]

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I've been working with virtualenv-0.8.4 on Linux, and found two bugs
when using it to built environments outside the tree containing the
source Python's 'lib' directory.

My setup:

 - I have a custom-built Python, which I use for all Zope-related work,
   in '~/projects/Zope/bin/python'.

 - I also have a "virtual" Python, built from /usr/bin/python using the
   old 'virtual_python.py' script, in '~/bin/python'.

 - I was trying to use virtualenv.py to build out new environments
   under '~/tmp', using the "Zope" python as the "source" Python.

The bugs:

 - This first one causes the 'exec_prefix' search to blow up if another
   lib directory *is* "above" the environment;  the 'lib-dyload' from
   the "foreign" Python ends up on sys.path.

 - The next one is that distutils' attempts to parse 'config/Makefile'
   barfs.

The attached patch fixes both, by adding 'lib-dynload' and 'config' to
the set of things which are copied / linked into the target environment.



Tres.
- --
===================================================================
Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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